Celiac disease is not life threatening if managed with proper dietary habits and wheat, oats, barley restrictions in the diet.
Next Steps
It is a chronic disease and can be managed well if under supervision of a pediatrician.
Health Tips
Other diseases are also often associated with celiac disease like Type 1
Diabetes Mellitus, Autoimmune
thyroid disease, which can have life threatening consequences during crisis. Hence, better to test them before hand and treat them of positive. Let me know in case of more doubts.